TC_ReturnStatementReplacer.java

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 * Copyright (C) 2006 Mirko Stocker <me@misto.ch>
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package org.rubypeople.rdt.refactoring.tests.core.inlinemethod;

import org.jruby.ast.LocalAsgnNode;
import org.jruby.lexer.yacc.IDESourcePosition;
import org.rubypeople.rdt.refactoring.core.inlinemethod.ReturnStatementReplacer;
import org.rubypeople.rdt.refactoring.documentprovider.IDocumentProvider;
import org.rubypeople.rdt.refactoring.tests.core.MultipleDocumentsInOneProvider;

public class TC_ReturnStatementReplacer extends FinderTestsBase {

	public void testMultipleReturns() {
		doc.setActive("test1");
		assertFalse(new ReturnStatementReplacer().singleReturnOnLastLine(doc));
	}
	
	public void testSingleReturn() {
		doc.setActive("test2");
		assertTrue(new ReturnStatementReplacer().singleReturnOnLastLine(doc));
	}
	
	public void testReturnNotAtTheEnd() {
		doc.setActive("test3");
		assertFalse(new ReturnStatementReplacer().singleReturnOnLastLine(doc));
	}
	
	public void testReturnLastLine() {
		doc.setActive("test4");
		assertTrue(new ReturnStatementReplacer().singleReturnOnLastLine(doc));
	}

	public void testExplicitReturn() {
		doc.setActive("test5");
		IDocumentProvider resultDocument = new ReturnStatementReplacer().replaceReturn(doc, new LocalAsgnNode(new IDESourcePosition(), "result", 2, null));
		assertEquals("result = var", lastLine(resultDocument));
	}

	public void testImplicitReturn() {
		doc.setActive("test6");
		IDocumentProvider resultDocument = new ReturnStatementReplacer().replaceReturn(doc, new LocalAsgnNode(new IDESourcePosition(), "result", 2, null));
		assertEquals("result = (2 ** 10)", lastLine(resultDocument));
	}

	public void testFactorialReturn() {
		doc.setActive("test7");
		IDocumentProvider resultDocument = new ReturnStatementReplacer().replaceReturn(doc, new LocalAsgnNode(new IDESourcePosition(), "fac", 2, null));
		assertEquals("fac = ((1..10).inject(1) { |i, j| i * j })", lastLine(resultDocument));
	}
	
	public void testReturnFixnum() {
		doc.setActive("test8");
		IDocumentProvider resultDocument = new ReturnStatementReplacer().replaceReturn(doc, new LocalAsgnNode(new IDESourcePosition(), "var", 2, null));
		assertEquals("var = 5", lastLine(resultDocument));
	}

	public void testErroneousDocument() {
		doc.setActive("test3");
		IDocumentProvider resultDocument = new ReturnStatementReplacer().replaceReturn(doc, new LocalAsgnNode(new IDESourcePosition(), "fac", 2, null));
		assertNull(resultDocument);
	}

	public void testNullAssignment() {
		doc.setActive("test7");
		IDocumentProvider resultDocument = new ReturnStatementReplacer().replaceReturn(doc, null);
		assertNull(resultDocument);
	}
	
	private String lastLine(IDocumentProvider document) {
		String[] lines = document.getActiveFileContent().split("\\n");
		return lines[lines.length - 1];
	}

	@Override
	protected void setUp() throws Exception {
		doc = new MultipleDocumentsInOneProvider("TC_ReturnStatementReplacer.source.rb", this.getClass());
	}
}